Chapter 12 Descriptions of Parameter SettingsC2000 Plus
12.1-07-8
Situation 2: Momentary power loss, or too low and unstable power voltage, or power supply
sliding down because of sudden heavy load.
Pr.07-13=2 “dEb active, DC bus voltage returns, output frequency returns” and power recovers.
During the dEb deceleration (includes 0 Hz run), if the power recovers to a voltage higher than
dEb return level, the drive maintains the frequency for the set time of Pr.07-14 (default = 3 sec.)
and then accelerates again. The “dEb” warning on the keypad is automatically cleared.
Situation 3: Unexpected power shut down or power loss
Pr.07-13=1 “dEb active, DC bus voltage returns, the output frequency does not return” and the
power does not recover.
The keypad displays the “dEb” warning and the drive stops after decelerating to the lowest
operating frequency. When the DC bus voltage is lower than the Lv level, the drive disconnects
the soft start relay until the power completely runs out.
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